Supplementary Figure 1: Equipment requirement setup.

(a) Glass-slide holder. A home-made glass-slide holder accommodates approx. 20 glass slides with a stirring magnetic bar beneath the glass slides for the washing steps. (b) Spotting rack in a transparent Mylar bag. The spotting rack can be directly plugged in the spotting robot and the lipid solution will be drawn from the vials through the septum. (c) Photo of spotting platform. (d) Photo of the device holder plugged on the microscope.